This is from a guys point of view, but to me it seems to be trying to call a lot of attention to whether someone is married or not. It has been my experience that women notice wedding rings much more than men do.
I am gay, I don't know if that has something to do with it, but I am oblivious to rings. With the exception of the teller at my small bank. She has a massive rock on her hand, other than that, I couldn't tell you who has a ring and who doesn't. I just don't pay attention to those things.
I can tell say that I have had a number of women at work, or around the court house comment on the ring I wear. It is a wedding band that my partner and I picked out. Occasionally, someone will ask, "Dan, are you married?" To which I reply, no. Then they say, why do you wear that ring? Then I say, oh my partner and I picked these out.
I don't think the finger nail polish on the ring finger is a bad thing, in fact I think it is probably a good idea because many guys are oblivious. lol